RL
Robert Lucas — 1940 US Census Record
Model Tree available1940 United States Federal Census · Allegany-County, Maryland
Our Model Tree links this Robert Lucas across the 1920, 1930 and 1940 US Censuses in Allegany-County, Maryland (XGBoost, ~Confirmed), with identified parents George & George — first a head (b.~1917), then head of a 3-person household.
Age 23
b. ~1917
Male
Head
Born: Maryland
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Allegany-County, Maryland |
| Surname | Lucas |
| Given Name | Robert O |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Married |
| Birthplace | Maryland |
| 1935 Residence (City) | Lavale |
| 1935 Residence (County) | Allegany |
| Additional Details | |
| Occupation | Electrician |
| Industry | Electrical Co |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 2000 |
| Highest Grade | H 4 |
| 1935 Residence | Same Place |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
| Occupation | Electrician |
| Township / Ward | Lavale |
| Est. Birth Year | ~1917 |
Household Members
Census records only state relationship to the household head.
Pairwise kinship is derived (~90–95% accurate), not recorded.
Step/blended families and boarders can break it.
3 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Robert | Age | Birth yr |
|---|---|---|---|---|
| Robert Lucas | Head | — | 23 | ~1917 |
| Dorothy Lucas | Spouse | — | 22 | ~1918 |
| Robert Lucas | Son | — | 2 | ~1938 |
Census Appearances
1920
Allegany, Maryland
Son, age 2
Allegany, Maryland · implied b. ~1918 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Lucas |
| Given Name | Robert L. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 2 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Pennsylvania |
| Speaks English | Yes |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1930
Allegany, Maryland
Son, age 12
Allegany, Maryland · implied b. ~1918 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Lucas |
| Given Name | Robert B |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Pennsylvania |
| Can Read/Write | Yes |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1940
Allegany-County, Maryland
Head, age 23
Allegany-County, Maryland · implied b. ~1917 — 3 household members
| Surname | Lucas |
| Given Name | Robert O |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Married |
| Birthplace | Maryland |
| 1935 Residence (City) | Lavale |
| 1935 Residence (County) | Allegany |
| Occupation | Electrician |
| Industry | Electrical Co |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 2000 |
| Highest Grade | H 4 |
| 1935 Residence | Same Place |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
Model Tree
An inferred pedigree reconstructed from census links — up to 4 generations within the 1900–1950 window. Closer generations are built from household co-residence; deeper ones are bridged by following a relative to their own childhood census. Confidence compounds and weakens with each generation.
Our Model Tree links Robert Lucas across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father George Lucas (~0.92 confidence) and father George Lucas (~0.92 confidence) and mother Margaret Lucas (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
George Lucas
b. ~1872
Source father
● Household
· direct · ~0.92
Father
George Lucas
b. ~1876
Source father
● Household
· direct · ~0.92
Mother
Margaret Lucas
b. ~1877
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Robert Lucas
Head · 1940 · age 23 · b. ~1917 · Maryland
★ You are viewing this record
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Allegany-County, Maryland
Open full size
1940 US Federal Census — Allegany-County, Maryland
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01500-00846)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Raymond Struntz | 14 | Son | — | Maryland |
| 2 | Mary Theresa Struntz | 10 | Daughter | — | Maryland |
| 3 | Rachael May Lutz | 33 | Head | — | Virginia |
| 4 | Jack Lutz | 12 | Son | — | Virginia |
| 5 | Joeann Lutz | 7 | Daughter | — | Virginia |
| 6 | James Lutz | 3 | Son | — | West Virginia |
| 7 | James Smith | 56 | Uncle | Electrician | Scotland |
| 8 | James Flora | 38 | Head | Textile Engineer | Maryland |
| 9 | Oda Flora | 35 | Wife | — | West Virginia |
| 10 | Joy E Flora | 10 | Daughter | — | Maryland |
| 11 | Roy Teter | 35 | Head | Salesman | West Virginia |
| 12 | Delena Teter | 32 | Wife | Sales Lady | West Virginia |
| 13 | Norine Teter | 16 | Daughter | — | West Virginia |
| 14 | Roy Dixon Teter | 15 | Son | — | West Virginia |
| 15 | John Spross | 46 | Head | Furnace Designer | New York |
| 16 | Lottie Spross | 46 | Wife | — | New Jersey |
| 17 | Charlotte Spross | 19 | Daughter | — | Illinois |
| 18 | Bruno Haney | 47 | Head | Forman | Germany |
| 19 | Clara Haney | 48 | Wife | — | Germany |
| 20 | Haney | 13 | Daughter | — | Maryland |
| 21 | Rudolph Nerling | 26 | Step son | Textile Worker | Germany |
| 22 | Ralph Rice | 44 | Head | Machinist | West Virginia |
| 23 | Eva Rice | 38 | Wife | — | West Virginia |
| 24 | Ralph Jr. Rice | 13 | Son | — | Maryland |
| 25 | Mary D Rice | 6 | Daughter | — | Maryland |
| 26 | Donna Sue Rice | 1 | Daughter | — | Maryland |
| 27 | Karl H Butler | 60 | Head | Agent | Maryland |
| 28 | Gertrude L Butler | 52 | Wife | — | Michigan |
| 29 | Clarence Claycomb | 38 | Head | Carpenter | Pennsylvania |
| 30 | Madolyn Claycomb | 35 | Wife | — | Pennsylvania |
| 31 | Floann Claycomb | 10 | Daughter | — | Pennsylvania |
| 32 | Nancy Claycomb | 8 | Daughter | — | Pennsylvania |
| 33 | Thomas Claycomb | 5 | Son | — | Pennsylvania |
| 34 | Harry Hughes | 45 | Head | Tire Builder | Maryland |
| 35 | Ada L Hughes | 43 | Wife | School Teacher | Maryland |
| 36 | Robert O Lucas THIS PERSON | 23 | Head | Electrician | Maryland |
| 37 | Dorothy Lucas | 22 | Wife | — | Virginia |
| 38 | Robert Jr. Lucas | 2 | Son | — | Maryland |
| 39 | George Lucas | 63 | Head | Laborer | Maryland |
| 40 | Margaret Lucas | 63 | Wife | — | Pennsylvania |
Pedigree Summary
Robert
Gen 1 · 3 parents
~0.92
Max depth 4 (1900–1950 window)
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1940 United States Federal Census (NARA). Our Model Tree links this person across census decades using XGBoost-based record linkage, with per-link confidence scores. Household corroboration strengthens the signal when co-residents appear on the same census pages in multiple years.
Source: National Archives and Records Administration (NARA)